Prediction of Sound-Absorbing Performance of Micro-Perforated Panels Using the Transfer Matrix Method

Tao, Z.; Zhang, B.; Herrin, D. W.; Seybert, A. F.

doi:10.4271/2005-01-2282

Cited by 12 publications

(4 citation statements)

References 2 publications

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“…However, Toa et. al [5] have mentioned that the MPP fabricated by metal is tedious and costly since the fabrication process of perforation holes requires advanced technologies, such as laser, jetting, and etching. On that matter, plastic-based MPP has replaced metal-based MPP due to cost issues [6].…”

Section: Introductionmentioning

confidence: 99%

The sound absorption properties of a double-leaf micro perforated panel (DL-MPP) made from a double-layered polypropylene material.

Yahya,

Che Din,

Desmond Daniel

et al. 2024

J. Phys.: Conf. Ser.

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Micro-perforated panel sound absorbers are recognized as an alternative method for noise control, offering advantages over conventional porous absorbers. However, the sound absorption of a single micro-perforated panel (MPP) is limited in its ability to cover a broad range of frequencies, especially in the low-frequency region. Therefore, the primary focus of this study is to investigate the sound absorption performance of a double-leaf micro-perforated panel (DL-MPP) absorber, which aims to achieve high sound absorption across a wide frequency range. This study examines the impact of varying parameters, including perforation ratio, diameter of perforated holes, and air gap thickness, on the sound absorption characteristics of a polypropylene-based DL-MPP absorber. Polypropylene was used as the sound absorption material for this investigation. The DL-MPP absorber consists of two perforated panels installed parallel to a rigid back wall, with an air gap between them. To assess the sound absorption performance, a prototype of the DL-MPP absorber was fabricated and tested using a two-microphone impedance tube method following ASTM E1050 standard. The results demonstrate that the optimal sound absorption performance was achieved by designing the MPPs with a 1% perforation ratio, 1 mm diameter of perforated holes, and a 1 mm sample thickness.

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Section: Introductionmentioning

confidence: 99%

The sound absorption properties of a double-leaf micro perforated panel (DL-MPP) made from a double-layered polypropylene material.

Yahya,

Che Din,

Desmond Daniel

et al. 2024

J. Phys.: Conf. Ser.

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show abstract

“…MPP is usually fabricated out of metallic material such as stainless steel and aluminium, which requires extremely high temperature manufacturing processes that could be very detrimental to the nature due to the release of huge amount of carbon to the atmosphere and thus, negatively leads to the increment of global temperature or better known as global warming phenomenon [8]. Not only that, perforation process of MPP made from metallic material could be very expensive due to the involvement of etching or laser technology [9].…”

Section: Introductionmentioning

confidence: 99%

Sound Absorption Performance of Micro-Perforated Panel (MPP) Made from Biodegradable Composite (<i>Hibiscus Cannabinus</i>+PLA) Material

Chin

Yahya

Din

et al. 2018

KEM

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Micro-perforated panel (MPP) has been widely considered as a very promising alternative in absorbing sound by utilizing the concept and mechanism of Helmholtz resonator. Most of the existing MPP are made of metallic material such as aluminium or stainless steel. In this study, biodegradable composite micro-perforated panel (BC-MPP) made from kenaf fibre and polylactic acid (PLA) will be implemented. Impedance tube test shows that BC-MPP possessed excellent sound absorption properties and could rival with conventional MPP. The peak absorption of BC-MPP is also more significant compare to conventional MPP as the peak absorption almost reaches unity.

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“…4 in Ref. 13) according to the conventional TMM and integrated TMM, respectively. Since the structural parameters all satisfy the requirement of a conventional TMM, both of the predictions agree well with each other and match the measurement.…”

Section: Verification and Comparisonmentioning

confidence: 99%

“…11 Nevertheless, the solving approach for periodical structures like microlattice materials can be simply decomposed into the transfer matrix method (TMM). 12,13 However, one subtle step within TMM is the selection of impedance for "transfer matrix (TM)." Some works adopted an impedance expression from empirical approximation, 12 while others tried to derive a more accurate one through theoretical analysis.…”

Section: Introductionmentioning

confidence: 99%

Optimization on microlattice materials for sound absorption by an integrated transfer matrix method

Cai

Yang

2015

The Journal of the Acoustical Society of America

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Materials with well-defined microlattice structures are superlight, stable, and thus bear great potential in sound absorption. An integrated transfer matrix method (TMM) is proposed to evaluate the sound absorbing efficiency of these lattice materials, in which a massive number of micropores are densely placed. A comparison between integrated TMM and conventional TMM reveals that the proposed approach offers better predictions on sound absorption of microlattice. This approach is then employed to optimize the microlattice material to determine the best pore and porosity that lead to maximum absorbing efficiency capability and minimum required thickness to attain a target sound absorption.

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Prediction of Sound-Absorbing Performance of Micro-Perforated Panels Using the Transfer Matrix Method

Cited by 12 publications

References 2 publications

The sound absorption properties of a double-leaf micro perforated panel (DL-MPP) made from a double-layered polypropylene material.

The sound absorption properties of a double-leaf micro perforated panel (DL-MPP) made from a double-layered polypropylene material.

Sound Absorption Performance of Micro-Perforated Panel (MPP) Made from Biodegradable Composite (<i>Hibiscus Cannabinus</i>+PLA) Material

Optimization on microlattice materials for sound absorption by an integrated transfer matrix method

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